Research Topic: Mycotoxicology

Increased Dissemination of Aflatoxin- and Zearalenone-Producing Aspergillus spp. and Fusarium spp. during Wet Season via Houseflies on Dairy Farms in Aguascalientes, Mexico

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This study found that during rainy seasons on Mexican dairy farms, houseflies carry more mold spores that produce harmful toxins called aflatoxins and zearalenone. These toxins contaminate cattle feed and milk, posing health risks to both animals and humans. The research shows that controlling houseflies during wet seasons is crucial to reduce toxic mold contamination of dairy products and animal feed.

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Negative Effects of Occurrence of Mycotoxins in Animal Feed and Biological Methods of Their Detoxification: A Review

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Molds that grow on grains and feed produce toxic substances called mycotoxins that can seriously harm farm animals, causing liver and kidney damage, reproductive problems, and reduced productivity. While proper storage and farming practices help prevent contamination, some mycotoxins still get through. Recent research shows that beneficial bacteria like those in yogurt and certain yeasts can effectively remove these toxins from animal feed, making it safer for livestock while protecting the environment from harmful chemicals.

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Transcriptome analysis of Ochratoxin A (OTA) producing Aspergillus westerdijkiae fc-1 under varying osmotic pressure

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This research studied how salt concentration affects the production of ochratoxin A, a toxic substance produced by the fungus Aspergillus westerdijkiae that contaminates foods like coffee and grapes. Using advanced genetic analysis, scientists found that moderate salt levels (20 g/L) increase the fungus’s ability to produce this toxin by affecting specific genes. The findings help explain why OTA contamination is more common in salty foods like cured meats and suggest new ways to prevent this contamination and protect food safety.

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Effects of Temperature, pH, and Relative Humidity on Growth of Penicillium crustosum OM1 Isolated from Pears and Its Penitrem A Production

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Researchers found that a mold called Penicillium crustosum produces a dangerous neurotoxin called penitrem A that can contaminate pears and other foods. The study showed that this mold grows best at cool temperatures (25°C) but produces the most toxin at slightly cooler temperatures (22°C) with neutral acidity and high moisture levels. Understanding these conditions helps us develop better strategies to prevent this toxin from contaminating the fresh fruit we eat.

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Citric acid impairs type B trichothecene biosynthesis of Fusarium graminearum but enhances its growth and pigment biosynthesis: transcriptomic and proteomic analyses

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Researchers discovered that citric acid, a natural acid found in plant roots and commonly used in agriculture, can reduce the production of dangerous mycotoxins called trichothecenes that contaminate wheat and corn crops. While citric acid surprisingly boosts the fungus’s growth and changes its color, it simultaneously shuts down the genes responsible for producing these toxic compounds. This discovery could help farmers use citric acid more strategically to prevent Fusarium head blight, a devastating crop disease, though care must be taken since it also promotes fungal growth.

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Different metabolite profiles across Penicillium roqueforti populations associated with ecological niche specialisation and domestication

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This study examined how different populations of the blue cheese fungus Penicillium roqueforti produce varying amounts of toxic and beneficial compounds depending on their environment. Cheese-making strains were found to produce fewer toxins than strains from spoiled food and lumber, likely due to selective breeding for safer products. The research identified specific genetic mutations that prevent cheese strains from producing certain toxins, helping explain why some cheese strains are safer than others.

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Unveiling the Substrate-Dependent Dynamics of Mycotoxin Production in Fusarium verticillioides Using an OSMAC-Metabolomics Approach

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Researchers studied how different growing conditions affect the production of harmful toxins by a fungus called Fusarium verticillioides that contaminates crops. Using advanced chemical analysis techniques, they found that the type of growth medium and time of incubation significantly influenced which toxins the fungus produced and in what amounts. Growing the fungus on corn-based medium produced different toxins than growing it on barley-based medium. These findings can help develop better strategies to prevent mycotoxin contamination in food and animal feed.

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